Add `#[rustc_error]` annotation, which causes trans to signal an error
if found on the `main()` function. This lets you write tests that live
in `compile-fail` but are expected to compile successfully. This is
handy when you have many small variations on a theme that you want to
keep together, and you are just testing the type checker, not the
runtime semantics.
r? @pnkfelix
Added all active features to the list in reference.md.
Added a second note about keeping the reference.md list up-to-date to the bottom of the list, since not everyone (including me) reads the big comment at the top of it. :)
Ensured that the feature gate list in reference.md is kept in alphabetical order.
Re-tag `slicing_syntax` as `Accepted`.
Rollup merge (373cbab5b0) of PR #20723
accidentally reverted a portion of commit
8327bcc167 which shifted
`slicing_syntax` from Active to Accepted.
While having a look at the Rust book I found this tiny error. In my opinion this if should be all lowercase, because it follows a colon, but I am no native speaker, so I am probably wrong. Also it is a very tiny change, so feel free to include it in any bigger documentation patch.
Removes the link to the rust-dev mailing list in the bug report submission page and also adds the address of the IRC server (`irc.mozilla.org`). Addresses #22249.
This overhauls the very meager docs that currently exist to clarify
various understandable confusions that I've noticed, e.g. people look in
`std::raw` for the "real" types of slices like `&[T]`, or think that
`Slice<T>` refers to `[T]` (fixes#22214).
This patch takes the liberty of offering some "style" guidance around
`raw::Slice`, since there's more restricted ways to duplicate all
functionality connected to it: `std::slice::from_raw_parts{,_mut}` for
construction and `.as_{,mut_}ptr` & `.len` for deconstruction.
It also deprecates the `std::raw::Closure` type which is now useless for
non-type-erased closures, and replaced by `TraitObject` for `&Fn`, `&mut
FnMut` etc, so I guess it should be called a:
[breaking-change]
This is super black magic internals at the moment, but having it
somewhere semi-public seems good. The current versions weren't being
rendered, and they'll be useful for some people.
Fixes#21281
r? @nikomatsakis @kmcallister
Since we don’t have Deprecated stability level anymore, the only other source of information is
deprecated-since version, which conveniently to us, only exists if the symbol is deprecated.
Fixes#21789
It is only allowed in paths now, where it will either work inside a `trait`
or `impl` item, or not resolve outside of it.
[breaking-change]
Closes#22137
`cp -a` is a GNU extension. Use an alternate combinaison of POSIX options
(`-PRp`) that do nearly the same.
The difference is `-a` will preserve context, links and xattr attributes,
whereas `-p` not. But as we use it only for copy a file, there is no
difference in the current context.
`PathBuf` does implement `Hash`, but `Path` doesn't. This makes it
annoying if you have a `HashMap` with `PathBuf`s as keys, because
it means you have to convert a `Path` into a `PathBuf` and get a
reference to it simply to perform operations on the `HashMap`!
Per [RFC 579](https://github.com/rust-lang/rfcs/pull/579), this commit
adds a new `std::process` module. This module is largely based on the
existing `std::old_io::process` module, but refactors the API to use
`OsStr` and other new standards set out by IO reform.
The existing module is not yet deprecated, to allow for the new API to
get a bit of testing before a mass migration to it.
